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COMPETENCE MATTERIAL FINISHEXERCISE
Newton’s First
Law
Newton’s
Second Law
Newton’s
Third Law
Aplication
Newton’s Law Of
frictional force
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COMPETENCE
1. Identify the application of the principle of one
Newton's law (law of inertia) in everyday life
2. Identify the application of Newton's 2nd law
principles in everyday life
3. Investigate the characteristics of static and
kinetic friction through trial
4. Identify the application of the principle of three
Newton's laws in everyday life
5. Applying Newton's laws on motion of objects on a
flat / tilt with or without friction
6. Applying Newton's laws on vertical motion
7. Applying Newton's laws in a circular motion
10. Newton’s First Law
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Each object will remain in a state (speed = 0) or
moving along a straight line at constant speed (moving
straight uniform) unless he influenced force to change
the situation.
each object has inertia properties of objects
(inertial / lazy nature objects), which will cause it to
remain stationary or moving at a fixed speed.
Law of inertia
For stationary or moving objects straight uniform
F = 0
11. Newton’s First Law Of motion
As long as there is no resultant force acting on an object,
the object will always be the case, ie stationary objects will
always be silent and moving objects will move with constant
velocity.
S F = 0 a = 0
law of Inertia inertial systems
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16. Newton’s Second Law
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Acceleration resulting from the resultant force
acting on an object is directly proportional to the resultant
style, the direction of the force and inversely proportional
to the mass of the object
a.mFatau
m
F
a
18. Newton’s Third Law
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If two objects interact, the force on the object of the same
and opposite directions with the style of other objects
m
Freaksi
Faksi
Faksi = - Freaksi
19. Aplication Newton’s Law Of frictional force
Stationary Objects
F
W
N
fs
Gaya berat
Gaya normal
Gaya gesek
statik
Nf smakss ,
Nf kk
statik kinetik
f
F
Moving objects
Gaya gesek
kinetik
F
W
N
fk
a
maksss fFf ,
0F aF m
makssfF ,
Contoh
20. A beam moving on an inclined plane. Based on Newton's second law, the
acceleration of the beam can be determined with the following equation:
ΣF = ma
w sin θ = ma
mg sin θ = ma
thus the acceleration beam on an inclined plane with slope θ is:
a = g sin θ
with g is the gravitational acceleration of 9.8 m / s
21. Summary Of this Matterial
Newton's law 'An object will keep moving with
constant velocity unless the object work force
unbalanced
Newton's Second Law "acceleration of an object
is directly proportional to the magnitude of the force
acting on the object and inversely proportional to the
mass of the object '
Newton's Third Law 'if I do a style object on the
second object, the second object will do a force equal
to the first object in the opposite direction to the
direction of the force penyebabbnya
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22. CHOOSE THE RIGHT ANSWER BY CLICKING ON ONE OF LETTERS A ,
B , C , D OR E
Soal No 1
When we boarded the bus that was moving suddenly braked then we will be
pushed forward , it shows the nature of inertia of objects , this is in
accordance with the law ....
Newton’s First Law
Newton’s Second Law
Newton’s Third Law
cause and effect
Force Of Akction n Reaction
E
D
C
B
A
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EXERCISE
25. Soal No 2
When the resultant force acting equals zero then the object ...
definitely moving straight .
certainly silent or balanced
stationary or moving objects straight uniform .
E
D
C
B
A
moving straight and also irregularly irregular
stationary objects or uniformly accelerated motion
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